No problem.
I've used Standard Araldite in the past for mine (plus rivets), but I've read that others have also used Silicone Adhesive or Contact Adhesive.
Metal face needs to be super clean and grease free.
Air Filter - original part number for K301 spec 47421d was A-235100. Now 235116-S1. Robbed this next info from an Ad ...............
Replaces OEM: CASE: C28883 CASE: D66337 CLARK EQUIPMENT: 6518241 Cub Cadet: 385168-R2, Cub Cadet: IH-385168-R2, Cub Cadet: IH-385168-R3
GRAVELY: 010900, GRAVELY: 043954 GRAVELY: 20057700 JOHN DEERE: AM31400 LESCO: 050036 NEW HOLLAND: 251399, NEW HOLLAND: 86546598
TECUMSEH: 32008 TORO: 235116 WISCONSIN: L0194A. ID: 4 5/8 OD: 6 Height: 1 7/8.
Armed with all those numbers, a good chance of getting a result local to you. At least you can search online now if no luck.
Regards.